Sus/Chassis
What is meant by the rule that dictates hole distances, "e/D"?
The ratio of the distance from the edge of the hole to the nearest free edge to the diameter of the hole must be 1.5 or higher
What percentage of brake travel must be mechanically controlled?
10%
What coolant fluids are allowed?
Water or plain oil
What programming language do we use?
Rust
Overtemp: 60C
Undertemp: 0C
Define torsional stiffness as it pertains to chassis.
Torsion stiffness is the chassis's resistance to twisting.
What is the purpose of the antisub belt?
Prevents driver from sliding ("submarining") forward in the event of a crash.
What does the differential do?
The differential allows the drive wheels to turn at different speeds
List 3 parts of the Shutdown Circuit
BMS, IMD, BSPD, Interlocks, Master switches - GLVMS, TSMS, Shutdown buttons (estops), BOTS, Inertia switch
What is the configuration of the F27 battery pack?
96s3p
What is F27's wheelbase?
61 in
How many diffusers are on the undertray?
6
What inverter model do we currently use?
pm100dx
What is one example of a passive component?
Resistor, capacitor, inductor
T or F.
Holes in the battery pack enclosure can be round holes or slots.
False. They MUST be round. Slots are not allowed.
What size wheels do we currently run?
10"
During a braking event, which axle sees more load?
Front axle
What is the max power the car can be?
80 kW
What is the minimum voltage for something to be considered HV?
60 V
What cell does the F27 pack use?
Molicel P45b
T or F.
A countersunk fastener can be considered a critical fastener if it is SAE grade 5 and have a positive locking mechanism.
False. Countersunk fasteners cannot be used as critical fasteners.
Lets say that in an event, we are projected to get faster lap times by removing an aero component. Can we remove such a component, on grounds of tunability?
No, we'd have to re-tech.
Explain the term gear ratio?
Ratio of rear sprocket teeth to front sprocket teeth. Determines the torque output to the wheels
Parts within what distance from a Tractive System component require grounding?
Parts that are 100mm or less from any Tractive System component (and not separated by a firewall), as well as any firewall.
The part itself must meet the grounding requirement if conductive tape is applied.
What is the max voltage a segment can be?
120 V static voltage